Something on my elegance’s skeleton

[rongy]

Hi, I noticed some feather like thing on the skeleton of my elegance. Looks like some kind feather duster worm, but not sure. Can anyone help id it? Or at least tell if it’s a good or bad thing

 

[JGT]

You are exactly right, featherduster. Harmless.

 

[rongy]

You are exactly right, featherduster. Harmless.

Thank you!